Reliable and secure operation of power systems becomes increasingly challenging as the share of volatile generation rises, leading to largely changing dynamics. Typically, the architecture and structure of controllers in power systems, such as voltage controllers of power generators, are fixed during the design and buildup of the network. As replacing existing controllers is often undesired and challenging, setpoint adjustments, as well as tuning of the controller parameters, are possibilities to counteract large disturbances and changing dynamics. We present an approach for fast and computationally efficient adaptation of parameters of structured controllers based on H-infinity optimization, also referred to as structured H-infinity controller synthesis, tailored towards power systems. Conditions are established that guarantee that the approach leads to stability.The results are verified in a testbed microgrid consisting of six inverters and a load bank, as well as simulation studies. The proposed method improves the system robustness, as well as the time-response to step disturbances and allows structured controller tuning even for large networks.

中文翻译：

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电力系统结构化控制器参数整定

随着不稳定发电份额的增加，电力系统的可靠和安全运行变得越来越具有挑战性，导致动态变化很大。通常，电力系统中控制器的架构和结构，例如发电机的电压控制器，在网络的设计和构建过程中是固定的。由于更换现有控制器通常是不受欢迎且具有挑战性的，因此设定点调整以及控制器参数的调整是抵消大干扰和动态变化的可能性。我们提出了一种基于 H 无穷大优化的结构化控制器参数的快速和计算高效适应方法，也称为结构化 H 无穷大控制器综合，专为电力系统量身定制。建立了保证该方法导致稳定性的条件。结果在由六个逆变器和一个负载组组成的试验台微电网以及仿真研究中得到验证。所提出的方法提高了系统的鲁棒性，以及对阶跃扰动的时间响应，并且即使对于大型网络也允许结构化控制器调整。